GP3D Type-BT User manual

ASSEMBLY MANUAL
©GP3D 2022
ASSEMBLY MANUAL
Grand Prix Car “Type-BT”

INTRODUCTION
Section 1 - Page 2
STEP 1 – THANK YOU!

We would like to thank you for purchasing the GP3D Grand Prix “Type-BT” RC car kit. This model is
inspired by the legendary achievements of Sir Jack Brabham highlighted by his unique achievement
in Formula 1 winning the 1966 World Championship in a car bearing his own name!

This kit is a totally new fusion of radio control cars, plastic model making, 3D printing and of course
the glorious and iconic “Grand Prix” era of the 1960’s.

The various printed components have been made from carefully selected polymers to achieve
various characteristics, such as; strength, flexibility, impact resistance, colour and texture. This
results in scale looks and colours (without the need for painting unless desired!) whilst ensuring a
cool functional RC car.

The inherent nature of 3D printing parts means for a given material and shape it will not be quite as
strong as an injection moulded equivalent. To counteract this, we have carefully selected and utilised
the latest available high quality and hence higher cost 3D printing filaments to ensure a good
durability when compared to other plastic moulded RC kits. More information about these materials
is covered in the next step!

We hope you love and enjoy building and driving this model, so we are always available to help and
support with any questions or issues you may have. We would also love to receive pictures of your
finished model in your chosen livery that we can add to our online Customer Gallery!

Please contact us if needed: [e-mail]

Information and spare parts are available in our online shop: www.GrandPrix3D.store

INTRODUCTION
Section 1 - Page 3
STEP 2 – TERMINOLOGY

3D Printing All the plastic components in this kit are 3D printed using the latest equipment
and high quality, high-cost materials.

Nylon G Nylon is a very impact resistant plastic. We use MatterHackers NylonG which is
glass fibre impregnated nylon and is used for most of the main chassis,
bulkheads, engine bay, gearbox casing and suspension components.

PC Blend Is a blended variant of polycarbonate from Prusa and is extremely strong and
impact resistant. It’s used in the wheels, shocks, uprights, steering, gears, axles,
trumpets and mirrors.

TPU Is an amazing flexible polymer we have used for the body shell and the ‘active’
driver figure! This material is super tough and capable of absorbing any
impacts. The kit comes with gold colour body parts; however, we also offer
these parts as customisable/options printed in a range of available colours. The
texture and finish perfectly captures the essence of the grand prix cars of the
1960’s era. You can also paint them with any flexible paint, such as
polycarbonate paint to achieve your favourite driver/livery!

PETG/Carbon Is a strong and hard polymer we have used for many of the cosmetic parts.

Brim For some of the printed parts a thin extra material layer is used during printing
to ensure the part does not prematurely detach from the print bed, this is called
a ‘brim’. Similar to injection moulded parts removed from the sprue, you will
need to remove the brim material and clean up the edges with a scalpel and/or
sand paper.

Hairs/blobs During the printing process sometimes very fine ‘hairs’ or small ‘blobs’ of plastic
remain on the part. We remove most of these during post processing the
components, but you can also clean up also using a scalpel and/or sand paper.

M1.6, M2, M2.5, M3 These four sizes of bolts/washers/nuts are used in this kit. Bolts all have Allen
socket heads.

M#cs The ‘cs’ part refers to counter sunk head.

M#button The ‘button’ part refers to button head.

M# x10mm Measurement in millimetres indicates the length of the screw thread. For
socket/button head this excludes the head, for counter sunk includes the head.

M# nylock nut The nylock nuts have the nylon insert part of the thread to resist coming loose.

INTRODUCTION
Section 1 - Page 4
STEP 3 – ICONS & SYMBOLS
Dotted line Dotted line indicates assembly path/routing of bolts into parts
Arrow Indicates direction of part for movement to assemble
Reverse Angle Inset image showing the reverse/different angle
x2
Make 2 Indicates you need to repeat this step to build 2 items, or Left and Right.
Leave loose Leave slightly loose (in some cases a future step will tighten)
Drill Drill out existing hole with provided 2mm or 1.5mm drill bit
NO Drill Do NOT drill holes (as bolt threads in)
Clean up Clean up part/edges with scalpel and/or sand paper
Gentle Exercise care and love and gently tighten!
Information Indicates some extra information or hints or options
Very Important! Highlights a very important item to take note
Check Check your assembly matches the picture

INTRODUCTION
Section 1 - Page 5
STEP 4 – LABELS GUIDE

Bags All the bags are labelled with a bag number and name and a type. Each
Bag number/name comes as a pair! A larger and smaller bag.

Bag Number Bags are numbered in the sequence and correspond exactly to each
SECTION of the assembly manual.

Bag Name Each bag is named, also corresponding to the assembly section.

Bag Type Each bag in the pair contains either; Components or Hardware.

Bag Type: Components The larger bag containing parts for the SECTION, and also contains the
smaller hardware bag.

Bag Type: Hardware The small bag contains all the required hardware such as screws, nuts,
shims, bearings etc.

Other parts Some larger parts are not bagged or labelled, but these will be
identifiable in the images! E.g.: Engine Bay!

INTRODUCTION
Section 1 - Page 6
STEP 5 – TOOLS
The kit includes:

0.9 Allen key (1x) 0.9mm (if you use your own please ensure it’s good quality and not worn, as
this can easily cause the M2 grub screws to be damaged)

2mm drill bit (1x) Used to open up any holes in the printed parts to ensure precision clearances,
e.g. the suspension hinge pin holes. Only use drill where indicated!

1.5mm drill bit (1x) Used for the scale spark plug lead wire holes and windscreen mounting holes.

Sand paper (1x) 180 grit – coarse; to clean up the printed parts edges

Sand paper (1x) 600 grit – fine; to polish any corner/edges to look pretty!
Others required:

Allen drivers 1.3mm, 1.5mm, 2.0mm & 2.5mm

Socket Driver 5.5mm (for the M3 wheel nuts)

Scalpel Trimming excess material off plastic parts. Optionally cutting out stickers.

Scissors Cutting out stickers.

Silicon Grease Any thick silicone-based grease – used for the friction shock lubrication.
Normal ~thin shock oil NOT recommended as shocks are not sealed.

Double-sided tape Secure your ESC and Receiver….and Transponder maybe?
Optional:

Small Pliers Can be useful, e.g.: inserting and removing the suspension hinge pins.

Tweezers Pick up/hold smaller screws/items!

Callipers/ruler For measuring screws to ensure correct usage

INTRODUCTION
Section 1 - Page 7
STEP 6 – SPARES BAG

A selection of hardware spares has been provided in a separate bag
If you lose or damage a screw when building use one from this bag.

INTRODUCTION
Section 1 - Page 8
STEP 7 – TECHNIQUES
Always be GENTLE when tightening screws for this entire build! A little trick to keep in mind is
imagine yourself softly petting our kitten ‘Oreo’.
Nothing should be over tightened as this can damage the printed parts. As soon as you feel the
bolt bottom-out tight  then STOP! ;-)

Where nuts are inserted into printed parts you can use one of three techniques;

1. Push in with your fingers.

2a. Pull the nut in by inserting the appropriate screw from the other side and tighten lightly until
the nut is pulled into the recess and seated.

2b. Alternatively pull back on the bolt with your fingers once threaded in the nut, this may be
sufficient to pull the nut into its recess.

3. Push in using an appropriate Allen driver from the nylon side where the hex nut easily slides
into the hex shaped hole– but be very careful and only use this method where light force only is
required as this method can damage the nylock insert part if excess pushing force is used.

INTRODUCTION
Section 1 - Page 9
STEP 8 – THAT’S IT…. LET’S GET BUILDING!!!